Sci-Fi hit doing the rounds, borrowed from Phil. Lots of science, explaining how mechanical engineer-cum-botanist Mark Watney survives on Mars after his fellow astronauts reluctantly leave him for dead. Best thing though was how natural the writing was in his diary / log.
Interesting back story too – self published in 2011; coming to a cinema near you in 2015:
Author’s page: The Martian – Andy Weir